Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified dorca optimizer algorithms" » "modified dorca optimized algorithms", "modified dorca optimized algorithm", "modified dorca optimization algorithms", "modified orca optimizer algorithms"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified dorca optimizer algorithms") or ("modified multiobjective estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified dorca optimizer algorithms") OR ("modified multiobjective estimation algorithms")).
• Removing quotes may allow a broader search: (( modified dorca optimizer algorithms ) or ( modified multiobjective estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified dorca optimizer algorithms") or ("modified multiobjective estimation algorithms"))*.